It’s a big day for Halo, as Halo: Campaign Evolved launches today, July 23, in early access. Beyond the excitement that normally surrounds the launch of a new Halo game, the release is especially notable because today will also be remembered as the day Halo finally came to PlayStation after more than two decades of console exclusivity on Xbox. The sci-fi series debuted in 2001 as a launch title for the original Xbox, and the franchise has been exclusive, at…